NCP720BMT105TBG datasheet(3/9 Pages) ONSEMI

Part #	NCP720BMT105TBG

Description	Very Low Dropout Bias Rail CMOS Voltage Regulator

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP720

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ELECTRICAL CHARACTERISTICS

Over Operating Temperature Range (TJ = −40°C to +125°C), VBIAS = (VOUT + 1.4 V) or 2.5 V, whichever is greater; VIN ≥ VOUT + 0.5 V,

IOUT = 1 mA, VEN = 1.1 V, COUT = 2.2 mF, unless otherwise noted. Typical values are at TJ = +25°C.

Parameter

Test Conditions

Symbol

Min

Typ

Max

Unit

Operating Input Voltage Range

VIN

VOUT +

VDO_IN

5.5

V

Operating Bias Voltage Range

VBIAS

(VOUT + 1.4)

≥ 2.4

5.5

V

Output Voltage Range (Note 4)

0.8

2.1

V

Output

Voltage

Accuracy

Nominal

TJ = +25

°C

VOUT

±0.5

%

Over VBIAS, VIN, IOUT,

TJ = –40°C to +125°C

VOUT + 1.4 V ≤ VBIAS ≤ 5.5 V,

VOUT + 0.5 V ≤ VIN ≤ 4.5 V,

0mA

≤ IOUT ≤ 350 mA

VOUT

-2

+2

%

VIN Line Regulation

VIN = (VOUT + 0.5 V) to 4.5 V, IOUT = 1mA

DVOUT/DVIN

5.0

mV/V

VBIAS Line Regulation

VBIAS = (VOUT + 1.4 V) or 2.5 V (which-

ever is greater) to 5.5 V, IOUT = 1 mA

DVOUT/DVBIAS

16

mV/V

Load Regulation

0 mA

≤ IOUT ≤ 350 mA (no load to full load) DVOUT/DIOUT

–1.0

mV/mA

VIN Dropout Voltage (Note 5)

VIN = VOUT(NOM) – 0.1 V,

(VBIAS – VOUT(NOM)) = 1.4 V,

IOUT = 350 mA

VDO_IN

110

200

mV

VBIAS Dropout Voltage (Note 6)

VIN = VOUT(NOM) + 0.3 V, IOUT = 350 mA

VDO_BIAS

1.15

1.4

V

Output Current Limit

VOUT = 0.9 x VOUT(NOM)

ICL

420

525

800

mA

Bias Pin Current

IOUT = 0 mA to 350 mA

IBIAS

80

110

mA

Shutdown Current (IGND)

VEN ≤ 0.4 V, TJ = -40°C to +85°C

ISHDN

0.5

2.0

mA

VIN Power-Supply Rejection Ratio

VIN – VOUT ≥ 0.5 V,

VBIAS = VOUT + 1.4 V,

IOUT = 350 mA

f = 10 Hz

PSRR (VIN)

52

dB

f = 100 Hz

56

f = 1 kHz

65

f = 10 kHz

46

f = 100 kHz

37

f = 1 MHz

25

VBIAS Power-Supply Rejection

Ratio

VIN – VOUT ≥ 0.5 V,

VBIAS = VOUT + 1.4 V,

IOUT = 350 mA

f = 10 Hz

PSRR (VBIAS)

65

dB

f = 100 Hz

65

f = 1 kHz

70

f = 10 kHz

50

f = 100 kHz

35

f = 1 MHz

24

Output Noise Voltage

BW = 10 Hz to 100 kHz

VN

40

mVRMS

Inrush Current on VIN

IVIN_INRUSH

100 +

ILOAD

mA

Startup Time

VOUT = 95% VOUT(NOM), IOUT = 350 mA,

COUT = 2.2 mF

tSTR

140

ms

Enable Pin High (enabled)

VEN(HI)

1.1

V

Enable Pin Low (disabled)

VEN(LO)

0

0.4

V

Enable Pin Current

VEN = 5.5 V

IEN

0.3

1

mA

Undervoltage Lock-out

VBIAS rising

UVLO

1.6

V

Hysteresis

VBIAS falling

0.2

V

Thermal Shutdown Temperature

Shutdown, temperature increasing

TSD

+160

°C

Reset, temperature decreasing

+140

°C

Operating Junction Temperature

TJ

–40

+125

°C

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

4. VOUT nominal value is factory programmable.

5. Measured for devices with VOUT(NOM) ≥ 1.2V.

6. VBIAS – VOUT with VOUT = VOUT(NOM) – 0.1V.

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